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Finding the Fourth Proportional to 132,080.70, 198,121.05 and 53,154.30

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Solution

The fourth proportional to 132,080.70, 198,121.05 and 53,154.30 is: 79,731.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,080.70 : 198,121.05 = 53,154.30 : x
  2. Step 2: Convert to fraction form
    132,080.70/198,121.05 = 53,154.30/x
  3. Step 3: Cross multiply
    132,080.70x = 198,121.05 × 53,154.30
  4. Step 4: Simplify right side
    132,080.70x = 10,530,985,728.02
  5. Step 5: Solve for x
    x = 10,530,985,728.02/132,080.70
  6. Step 6: Final answer
    x = 79,731.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.